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PowerBook 140

LEM Staff - 1991.10.21

The PowerBook 140 had a physically larger passive-matrix screen than the PowerBook 100 (although it displayed the same 640 x 400 pixels), a more efficient CPU, and a 2-hour NiCad battery (the same one used on all PowerBook models from the 140 to the 180). It was replaced by the 25 MHz PowerBook 145 in August 1992.

As with all early PowerBooks, when buying one be sure it has all the memory you need (new PowerBook RAM is very difficult to locate, especially at reasonable prices).

The PB 140 has an 8 MB memory ceiling, although you can go beyond that by using Virtual Memory (slow and free) or RAM Doubler (faster, not free, and discontinued). A third option is RAM Charger 8.1, which offers better memory management than the Mac OS.

Physical

Online Resources

Mac ‘Book Power Management Adventures, Charles W Moore, ‘Book Value, 2009.05.19. If your ‘Book won’t power up, shuts down while your working, or has other power issues, resetting its internal power manager may clear things up.

Why You Should Partition Your Mac’s Hard Drive, Dan Knight, Mac Musings, 2008.12.11. “At the very least, it makes sense to have a second partition with a bootable version of the Mac OS, so if you have problems with your work partition, you can boot from the ’emergency’ partition to run Disk Utility and other diagnostics.”

Creating Classic Mac Boot Floppies in OS X, Paul Brierley, The ‘Book Beat, 2008.08.07. Yes, it is possible to create a boot floppy for the Classic Mac OS using an OS X Mac that doesn’t have Classic. Here’s how.

The Compressed Air Keyboard Repair, Charles W Moore, Miscellaneous Ramblings, 2008.07.24. If your keyboard isn’t working as well as it once did, blasting under the keys with compressed air may be the cure.

Macs: Better by design, Tamara Keel, Digital Fossils, 2008.07.11. From the beginning, Macs have stood apart from other computers with their attractive and intelligent design.

Simple Macs for Simple Tasks, Tommy Thomas, Welcome to Macintosh, 2007.10.19. Long live 680×0 Macs and the classic Mac OS. For simple tasks such as writing, they can provide a great, low distraction environment.

Mac System 7.5.5 Can Do Anything Mac OS 7.6.1 Can, Tyler Sable, Classic Restorations, 2007.06.04. Yes, it is possible to run Internet Explorer 5.1.7 and SoundJam with System 7.5.5. You just need to have all the updates – and make one modification for SoundJam.

Getting notebook design ‘just right’, Andrew J Fishkin, The Mobile Mac, 2006.12.05. Some notebooks have just the right mix of design, quality, and features, while others fall short in one or more categories.

Jag’s House, where older Macs still rock, Tommy Thomas, Welcome to Macintosh, 2006.09.25. Over a decade old, Jag’s House is the oldest Mac website supporting classic Macs and remains a great resource for vintage Mac users.

Moving files from your new Mac to your vintage Mac, Paul Brierley, The ‘Book Beat, 2006.06.13. Old Macs use floppies; new ones don’t. Old Macs use AppleTalk; Tiger doesn’t support it. New Macs can burn CDs, but old CD drives can’t always read CD-R. So how do you move the files?

System 7.6.1 is perfect for many older Macs, John Martorana, That Old Mac Magic, 2006.03.24. Want the best speed from your old Mac? System 7.6.1 can give you that with a fairly small memory footprint – also helpful on older Macs.